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Bitarray 3 transition
=====================
The bitarray version 3 release is bitarray's farewell to Python 2.
Apart from removing Python 2 support, this release also migrates
bitarray's ``.decode()`` and ``.search()`` methods to return iterators.
This is similar to how Python's ``dict.keys()``, ``.values()``
and ``.items()`` methods were revamped in the Python 2 to 3 transition.
In the following table, ``a`` is assumed to a bitarray object.
+----------------------+----------------------+
| before version 3 | version 3 |
+======================+======================+
| ``a.iterdecode()`` | ``a.decode()`` |
+----------------------+----------------------+
| ``a.decode()`` | ``list(a.decode()`` |
+----------------------+----------------------+
| ``a.itersearch()`` | ``a.search()`` |
+----------------------+----------------------+
| ``a.search()`` | ``list(a.search()`` |
+----------------------+----------------------+
Aside from these changes which will make bitarray 3 more pythonic, there
are a few other minor changes (see changelog).
It should be emphasized that in most common use cases the bitarray 3
transition will require only minor code changes, or no changes at all.
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